1 spoon = 1 5ml or1spoon = 20ml. There are two mainstream measures in the west, and a good recipe will tell you which one to use. Unless otherwise specified, 15ml teaspoons usually weigh less than spoons. Generally speaking, a teaspoon refers to a small iron spoon, which is relatively flat and can only hold a little liquid. Spoon refers to a spoon made of ceramics, which is deep and can hold more liquid. According to my experience, the ratio of teaspoon to spoon in the recipe is about 4: 1, which means that four teaspoons are equal to one spoon. Teaspoon spoon